Owner's manual

61-G 1/01

Maintenance

Problem Cause Remedy

Poor Combustion 1. Refractories Check refractories to see if they are plugged with soot or

broken in pieces. Clean or replace as necessary.

2. S.S. Ring Check to be sure ring is present and fits tight against the

furnace wall (50-100 HP).

3. Primary Air Check air adjustment. Air/fuel mixture may be off. Open

Adjustment primary air so fire is to outside wall of furnace.

4. Secondary Air Check main air adjustment to see if it is loosened up.

Adjustment Adjust as necessary and tighten plate in position. Check

and O

levels.

5. Draft Check draft with a gauge. Draft should be a -.02 " to -.04"

W.C. with burner off or -.04" to -.06" when operating. May

need to install a barometric damper.

6. Dirty Flue Check flue for carbon buildup or blockage. Clean flue

passages with brush.

7. Negative Room Pressure Make sure no exhaust fans are running in the boiler room.

Burner back fires 1. Refractories Check refractories to see if they are plugged with soot or

broken in pieces. Replace as necessary.

2. Ignition Electrodes Check electrodes for carbon buildup and clean if

necessary. Check for proper adjustment Readjust if

necessary. Check for cracks in porcelain; if found replace.

3. Flame rode adjustment Check flame rod for carbon buildup and clean if

or UV Scanner necessary. Check flame rod adjustment via a

display module. Flame signal should be 5 VDC.

Check for cracks in porcelain. If found, replace.

Check for dirt on flame scanner and clean.

Check for proper location of detector.

5. Draft Check draft with a gauge. Draft should be a -.02 " to -.04"

W.C. with burner off or -.04" to -.06" when operating. May

need to install a barometric damper.

6. Negative Room Pressure Make sure no exhaust fans are running in the boiler room.

Boiler will not 1. Gas Supply Check gas pressure coming into gas train. If low,

maintain pressure contact gas company. Should be 7" to 11" W.C. Check

coil in gas valve with AMP meter. Replace if bad.

Check gas regulator setting and readjust as necessary.

2. Dirty Flue Check flue for carbon buildup or blockage. Clean flue

passages with brush.

3. Pressuretrol Disconnect all power to the controller. Disconnect the

wires from the controller. Put an OHM meter between the

switch terminals. Lower the set point of the controller.

Switch should make. Raise the set point and recheck

with OHM meter. Switch should break. If the controller

operates improperly, replace it.